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wepple

3,236 karma · joined May 8, 2013

Security engineer. Strong opinions loosely held.
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wepple··on Charlieplexing
This is nifty. I noticed a lot of the adafruit LED displays were charlieplexed but never figured to look up what that meant.
wepple··on DNS traffic can leak outside the VPN tunnel on Android
NYC subway, today: https://ibb.co/v3rdHcm
wepple··on DNS traffic can leak outside the VPN tunnel on Android
Follow up: I just took this photo: https://ibb.co/v3rdHcm
wepple··on DNS traffic can leak outside the VPN tunnel on Android
I literally just took this photo right now (2024-05-08) https://ibb.co/v3rdHcm
wepple··on Proton Mail discloses user data leading to arrest in Spain
I think you’ve completely missed the point.

Folks who design products that are trying to protect privacy should do their absolute best to sand down the sharp edges and make them secure-by-default wherever possible.

wepple··on Proton Mail discloses user data leading to arrest in Spain
I would hope so, but is that confirmed?

Is there a clear definition between handing over data they have and being compelled to make modifications in order to intercept?

wepple··on Proton Mail discloses user data leading to arrest in Spain
I wouldn’t call it reasonable.

If you’re trying to evade LE because it’s illegal to be gay in your country, and you get caught because you’d listed an Apple address in your ProtonMail account - can’t we design better products to make this less likely?

wepple··on Proton Mail discloses user data leading to arrest in Spain
When thinking about these types of cases, always keep Parallel Construction in mind: https://en.m.wikipedia.org/wiki/Parallel_construction

There’s a reasonable chance that they already had this info (possibly even cleartext email via an ISP lawful intercept), and the proton/apple jig whilst bad, wasn’t as bad as the real source

wepple··on Proton Mail discloses user data leading to arrest in Spain
> they do not have the encryption keys.

True, but they can trivially obtain them given they control everything in the browser.

The question then becomes, does the law allow compelling to that degree? Apple fought back in the San Bruno case, but they’re very well lawyered up

wepple··on Proton Mail discloses user data leading to arrest in Spain
> It is up to the user

And therein lies the problem. We on HN may have a few ideas about how to do this, but the typical user of a secure email/VPN/tor unfortunately doesn’t and realistically can’t understand the corner cases and tricks.

Realistically, even HN users would make enough mistakes.

This is why I’m dubious of these types of products marketing to average consumers

wepple··on Attackers can decloak routing-based VPNs
There have been a bunch of these, although if you’re really that concerned, you might as well go all in with tor

A modern version of this: https://github.com/grugq/portal

wepple··on DNS traffic can leak outside the VPN tunnel on Android
> They've offered ad blocking for years.

Please show me evidence to back this up and I’ll happily walk back my statements.

The “mullvad” browser is not their VPN product. And if you think DNS denylisting prevents “ad networks from spying on you”, I have some unfortunate news for you. It works to prevent the rendering of a subset of ads (especially in the browser), but isn’t worth a damn for actual behavioral analysis.

wepple··on Microsoft overhaul treats security as 'top priority' after a series of failures
I’m fairly skeptical too, and only time will tell. FWIW I don’t think highly of Microsoft when it comes to security. But two things that may be positive:

1) there is precedent for Microsoft doing a strong 180 when it comes to security, driven by the original trustworthy computing memo of 2002. We’ll see if Satya means this level or not

2) it looks like they’re being hurt by the most important motivator of all: money. If they don’t tidy up their act fast, govt and industry will come down hard on them. The US is losing the cyber persistence game to China and it’s a national security risk

Edit: precedent/president

wepple··on Microsoft overhaul treats security as 'top priority' after a series of failures
I’d love to see an honest blog post from MS after all this effort on what worked and didn’t.

A massive horizontal effort like this is especially challenging after accruing substantial security debt over years

wepple··on DNS traffic can leak outside the VPN tunnel on Android
From my above post:

> The NYC subway ads state that they save you from online web ad systems; blatantly false.

wepple··on DNS traffic can leak outside the VPN tunnel on Android
From my above post:

> The NYC subway ads state that they save you from online web ad systems; blatantly false.

wepple··on DNS traffic can leak outside the VPN tunnel on Android
In combination?

The browser piece is doing almost all of the work against ad networks, isn’t it?

Which part of defense against ad networks does a VPN contribute to?

wepple··on DNS traffic can leak outside the VPN tunnel on Android
I’m going to make sure to photograph the NYC subway ads next time I see them
wepple··on DNS traffic can leak outside the VPN tunnel on Android
The NYC subway ads
wepple··on DNS traffic can leak outside the VPN tunnel on Android
Sorry, not buying it. To claim that you stop online ad networks is a downright falsehood and you know it.

That copy should’ve never made it past basic checks for legitimacy.

Or alternatively: feel free to describe to HN how Mulvad protects users against ad networks.

wepple··on DNS traffic can leak outside the VPN tunnel on Android
They’re in it for the money.

They’ve made some claims that are downright lies, I chuckle at the idea anyone would trust them.

The NYC subway ads state that they save you from online web ad systems; blatantly false.

I’ll take a photo next time I see the ad to store away.

wepple··on Don't Just Say "Hello" in Chat
Not a single one of these is a valid reason; they all add a distraction round-trip and getting straight to the point achieves the same outcome without the RTT
wepple··on Why We Hate Working for Big Companies (2018)
How did someone “brainless” navigate to a position where they get to party, and if you’re so “brainfull”, why don’t you do the same?

Is there political corruption and abuse that keeps you there?

wepple··on The reckless policies that helped fill our streets with large cars
Yeah, we had a very compact car. Drove my firstborn home from the hospital in it, surrounded by monster vehicles. Then traded it for a (smallish) SUV.

I may wish it weren’t that way, but I’m playing the game.

wepple··on Apple users are being locked out of their Apple IDs with no explanation
Additional datapoint: my account just got locked, was forced to change password.

I use a gmail email as my login

wepple··on The man who killed Google Search?
Are there known examples of ex-McKinsey employees that are generally considered a force for good in general?
wepple··on Microsoft is a national security threat: ex-White House cyber policy director
Double-edged sword, because few organizations also have the resources to do security at the scale and depth as a MS/goog/Amz
wepple··on Microsoft is a national security threat: ex-White House cyber policy director
I’d imagine that these proclamations are part of the negotiation.

I wouldn’t want to be a Microsoft account executive on the US govt contract right now; they’re about to have a massive load of additional requirements.

And if they don’t play ball, possibly antitrust to weaken their stranglehold on being the only real enterprise player.

I’m not saying any of this is the right approach, but it’s a tool in the governments toolbox.

wepple··on Why I'm Leaving New York City [video]
What is an “angry state” - the people? The politics? …?
wepple··on An electric new era for Atlas
I’m saying if you have a collection of humanoids and general purpose tooling, you can adapt much faster.

I don’t literally mean retool a conventional production line in one night

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